Valve for non-rising rod type pipeline unsealing plug
A concealed stem type, special valve technology, applied in the direction of sliding valve, valve device, engine components, etc., can solve the problems of internal leakage of liquid, affecting the use effect of knife valve, poor sealing, etc., reducing installation space and sealing effect. Good, avoid the effect of deposition
Inactive Publication Date: 2013-12-04
SHANDONG ZHONGLI HIGH PRESSURE VALVE CO LTD
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Problems solved by technology
The sealing device of the valve body of the clip-on knife valve is installed on one side of the valve body, and the flow direction of the liquid flows from one end of the valve to the other. When the gate of the valve is closed, the sealing device of the knife valve is only installed on the valve. One side of the body, the seal is not tight, the liquid will leak from the sealing device, which seriously affects the use effect of the knife valve
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[0010] The present invention will be further described below in conjunction with accompanying drawing and specific embodiment:
[0011] A hidden rod type special valve for opening, closing and blocking pipelines, which includes: a valve body 1 and a gate plate 2; a valve cover is designed above the valve body 1, and the gate plate 2 is installed in the valve body 1; A support 6 is designed; one side of the valve body 1 is a plane, and the other side is a slope surface, and one side of the gate 2 is a plane, and the other side is a slope surface, and the slope surface of the gate plate is consistent with the slope surface of the valve body. Correspondingly; the driving connection device 4 is installed on the top of the gate 2 to run through the entire valve cover 3, and is in contact with the stuffing box of the valve cover 3, and the upper seal is realized by using the packing; The connecting device 4 cooperates with each other, and the hand wheel 7 is installed on the support...
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A valve for a non-rising rod type pipeline unsealing plug comprises a valve body and a flash board. A valve cover is arranged on the valve body, the flash board is installed in the valve body, a support is arranged above the valve cover, one face of the inner side of the valve body is a plane, the other side of the inner side of the valve body is a slope face, one face of the flash board is a plane, and the other face of the flash board is a slope face; a drive connecting device is installed above the flash board, penetrates through the whole valve cover, makes contact with a stuffing box of the valve cover and achieves upper seal by means of stuffing; a valve rod is arranged in the support and matched with the drive connecting device on the flash board, and a hand wheel is installed on the support and rotates to enable the flash board to move up and down. The valve has the advantages that in sealing, bidirectional sealing in a mode that a valve seat is located on the left and the right of the flash board is adopted, so the sealing effect is good; a non-rising rod structure is adopted in the valve rod, so installation space is greatly reduced, and damage to the valve rod caused by dust and other impurities is avoided; because of a full-drift diameter channel, sedimentation of media in the valve body is avoided.
Description
technical field [0001] The invention relates to the field of valve machinery, in particular to a special valve for unblocking and plugging a hidden rod type pipeline. Background technique [0002] At present, when repairing some special pipelines such as oil and gas pipelines, if there is flammable, explosive or high-pressure fluid in the pipeline, it is always necessary to close the valve in front of the damaged pipeline, decompress the pipeline, and then carry out Maintenance, doing so will bring a lot of unnecessary losses. In order to reduce losses, therefore, there is a pair of clip-on knife valves with pressure opening and sealing. The sealing device of the valve body of the clip-on knife valve is installed on one side of the valve body, and the flow direction of the liquid flows from one end of the valve to the other. When the gate of the valve is closed, the sealing device of the knife valve is only installed on the valve. One side of the body, the seal is not tigh...
Claims
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IPC IPC(8): F16K3/02F16K3/30
Inventor 殷方方杜宜俊
Owner SHANDONG ZHONGLI HIGH PRESSURE VALVE CO LTD